var UserModel = require('../models/userModel');
var GameModel = require('../models/gameModel');


module.exports = {

  list: function (req, res) {
    GameModel.find({}, { _id: 0, __v: 0 })
      .then(games => {
        return res.json(games);
      })
      .catch(err => {
        return res.status(500).json({
          message: 'Error when getting games.',
          error: err
        });
      });
  },



  create: async function (req, res) {
    const gameCode = req.body.code;
    const passp = req.body.pass;

    try {

      const userFound = await UserModel.findOne({ pass: passp });
      if (!userFound) {
        return res.status(404).json({ message: 'Wrong password' });
      }

      const gameFound = await GameModel.findOne({ code: gameCode });
      if (gameFound) {
        return res.status(409).json({ message: 'Game already exists' });
      }

      const uri = "https://id.twitch.tv/oauth2/token?client_id=" +userFound.client_id+ "&client_secret=" + userFound.client_secret+ "&grant_type=client_credentials";
      var response = await fetch(uri, { method: 'POST' });
      var mData = await response.json();

      var mheaders = {
        'Accept': 'application/json',
        'Client-ID': userFound.client_id,
        'Authorization': 'Bearer ' + mData.access_token
      }

      response = await fetch(
        "https://api.igdb.com/v4/games",
        {
          method: 'POST',
          headers: mheaders,
          body: `fields name; where id = ${gameCode};`
        }
      )
      const gameData = await response.json()
      if (gameData.length == 0) {
        return res.status(404).json({ message: 'wrong code' });
      }

      response = await fetch(
        "https://api.igdb.com/v4/covers",
        {
          method: 'POST',
          headers: mheaders,
          body: `fields image_id; where game = ${gameCode};`
        }
      )
      const coverData = await response.json()
 
      response = await fetch(
        "https://api.igdb.com/v4/release_dates",
        {
          method: 'POST',
          headers: mheaders,
          body: `fields human; where game = ${gameCode};`
        }
      )
      const releasedData = await response.json()

      const game = new GameModel({
        code: gameCode,
        title: gameData[0].name,
        released: releasedData[0].human,
        webImg: `https://images.igdb.com/igdb/image/upload/t_cover_big/${coverData[0].image_id}.jpg`,
      });

      const savedGame = await game.save();
      return res.status(201).json(game);

    } catch (error) {

      return res.status(500).json({ message: 'Error when creating game', error: error });
    }
  },

  remove: async function (req, res) {
    var id = req.body.code;
    const passp = req.body.pass;

    try {
      const userFound = await UserModel.findOne({ pass: passp });
      if (!userFound) {
        return res.status(404).json({ message: 'Wrong password' });
      }

      const movie = await GameModel.findOneAndDelete({ code: id });
      if (!movie) {
        return res.status(404).json({ message: 'No such game' });
      }

      return res.status(204).json();
    }
    catch (err) {
      return res.status(500).json({ message: 'Error when deleting the game.' });
    }
  }

};